Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Index: man-pages-3.24/man2/prctl.2 =================================================================== --- man-pages-3.24.orig/man2/prctl.2 +++ man-pages-3.24/man2/prctl.2 @@ -37,6 +37,7 @@ .\" 2008-06-13 Erik Bosman, <ejbosman@xxxxxxxx> .\" Document PR_GET_TSC and PR_SET_TSC. .\" 2008-06-15 mtk, Document PR_SET_SECCOMP, PR_GET_SECCOMP +.\" 2009-10-03 Andi Kleen, document PR_MCE_KILL_* .\" .TH PRCTL 2 2008-07-16 "Linux" "Linux Programmer's Manual" .SH NAME @@ -318,6 +319,45 @@ on unaligned user access. for information on versions and architectures) Return unaligned access control bits, in the location pointed to by .IR "(int\ *) arg2" . +.TP +.BR PR_MCE_KILL +(Since Linux 2.6.32) +Set the machine check memory corruption kill policy for the current thread. +When +.I arg2 +is +.B PR_MCE_KILL_CLEAR +clear thread memory corruption kill policy and use system-wide default. +When +.I arg2 +is +.B PR_MCE_KILL_SET +use a thread-specific memory corruption kill policy. In this case +.I arg3 +defines whether the policy is +.I early kill ( +.B PR_MCE_KILL_EARLY +) +or +.I late kill ( +.B PR_MCE_KILL_LATE +) or +.B PR_MCE_KILL_DEFAULT. +Early kill means that the task receives a +.I SIGBUS +signal as soon as hardware memory corruption is detected inside its address space. +In late kill mode the process is only killed when it accesses a corrupted page. +See +.I sigaction(2) +for more information on the +.I SIGBUS. +The policy is inherited by children. +Unused arguments upto 6 must be zero for future compatibility. +.TP +.BR PR_MCE_KILL_GET +returns the current per process machine check kill policy as defined above. +All following arguments upto 6 must be 0. + .SH "RETURN VALUE" On success, .BR PR_GET_DUMPABLE , @@ -400,6 +440,12 @@ capability. The .BR prctl () system call was introduced in Linux 2.1.57. + +The +.I PR_MCE_KILL +and +.I PR_MCE_KILL_GET +suboptions were introduced with Linux 2.6.32. .\" The library interface was added in glibc 2.0.6 .SH "CONFORMING TO" This call is Linux-specific. -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
